Isingeniso se-interface ye-LVDS yesikrini se-TFT-LCD LCD

Incazelo ye-LVDS Interface

Incazelo yesikhombimsebenzisi se-LVDS ibhekisela kumsebenzi wephinikhodi yesikhombimsebenzisi sokufaka se-LVDS ohlangothini lwephaneli le-LCD, okungafundwa ngokujwayelekile ngokubheka idatha yokuqala yefektri yesikrini se-LCD (evame ukubizwa ngokuthi incwadi yokucaciswa kwesikrini). Nakuba amazinga ahlukene esiNgisi omsebenzi wesikhombimsebenzisi sesikrini se-LCD ahlukile, Kodwa akunzima ukubona lokho, uma ubheka ngokulandelana kwezinhlamvu zayo ezibalulekile nezinombolo, Isibonelo, isikrini esithile se-LCD semodeli ye-CLAA170EA02, Bheka ithebula lencazelo yesikhombimsebenzisi elinikezwe umenzi, Njengoba kungabonakala kukholomu emfushane ngesiNgisi, Nge-RXO ne-RXE, Isiteshi ngasinye sinenombolo ethi “0″ ~ “3″ isignali yedatha yeqembu, Futhi sinesethi eyodwa yezimpawu zewashi (RXOC noma i-RXEC), Lokhu kukhombisa ukuthi isikrini se-LCD siyisikrini esingu-30-pin, esiphindwe kabili, esingu-8-bit, Akunzima futhi ukubona umsebenzi waso wephinikhodi, Okusho ukuthi, “RXO0-” imelela isethi yokuqala yedatha 1-, “RXO0 +” isho isethi yokuqala yedatha: 1+; I-“RXE0-” isho isethi yesibili yedatha 1-, i-“RXE0 +” isho isethi yesibili yedatha 1+, Okunye, njalo njalo. Izici ze-interface ye-LVDS. I-LVDS iyisifinyezo sesiNgisi esithi “Low Voltage Differential Signaling” okusho isignali yomehluko ephansi. I-LVDS inqoba izinkinga zokudlulisa ukusetshenziswa kwamandla aphezulu kwe-broadband kanye nokuphazamiseka kwe-EMI electromagnetic kwimodi yezinga le-TTL, futhi iyimodi yokudlulisa isignali yevidiyo yedijithali. I-interface yokukhipha ye-LVDS isebenzisa i-voltage swing ephansi kakhulu (cishe i-350mV) ukudlulisa idatha ngomehluko ezintanjeni ezimbili ze-PCB noma ezintanjeni zebhalansi. I-interface ye-LVDS idlulisela isignali ku-PCB ehlukene noma ikhebula lebhalansi ngesivinini sama-megbits angamakhulu ngomzuzwana. Ngenxa yemodi yokushayela ye-voltage ephansi kanye ne-current current ephansi, inezinzuzo zomsindo ophansi kanye nokusetshenziswa kwamandla aphansi. Ku-TV yombala we-LCD, umugqa we-LVDS usebenzisa ikhebula lebhalansi ikakhulukazi, empeleni umugqa webhangqa elisontekile. I-LVDS interface circuit component LCD color TV noma isibonisi sombala ekuchazeni kokuqala kwezimpawu zokufaka (njenge-TV, i-AV, njll.), ukuze kutholakale isignali ye-RGB, inqubo yayo yokucubungula ifana kakhulu ne-TV yombala evamile, bese kuthi ngokuguqulwa kwe-RGB-LVDS, isignali ye-LVDS ephumayo, ithunyelwe esikrinini se-LCD. Njengoba i-TFT esikrinini se-LCD ibona kuphela isignali ye-TTL (RGB), i-LVDS ethunyelwa esikrinini se-LCD idinga ukucacisa isignali ye-TTL. Kungabonakala ukuthi isekethe ye-interface ye-LVDS ihlanganisa izingxenye ezimbili: isekethe ye-interface yokukhipha ye-LVDS ohlangothini lwebhodi lomama (umthumeli we-LVDS), kanye nesekethe ye-interface yokufaka ye-LVDS (umtholi we-LVDS) ohlangothini lwephaneli le-LCD. I-terminal yokudlulisa ye-LVDS iguqula isignali ye-TTL ibe yisignali ye-LVDS, bese idlulisela isignali ku-LVDS decoding IC ohlangothini lwephaneli le-LCD ngekhebula lomugqa noma ikhebula eliguquguqukayo phakathi kwephaneli yokushayela nephaneli le-LCD), iguqula isignali ye-serial ibe yisignali efanayo yezinga le-TTL, bese iyithumela kusekethe ye-LCD timing control kanye ne-ranks drive.